package com.oak.gateway8888;

import lombok.extern.slf4j.Slf4j;
import org.apache.http.protocol.HTTP;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * com.oak.gateway8888 -> 自定义全局过滤器
 *
 * @Author: guoxy
 * @Description:
 * @Date: 2022/7/3
 */
@Component
@Slf4j
public class CustomGlobalFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("custom global filter");
        String username = exchange.getRequest().getQueryParams().getFirst("username");
        if(username==null){
            log.info("********非法用户********，访问失败！！");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return -1;
    }
}